Allocation of Resources Without Limits or Throttling The advisory has been revoked - it doesn't affect any version of package jws5-tomcat-jsvc (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL7-JWS5TOMCATJSVC-18548448
- published5 Aug 2026
- disclosed28 Jul 2026
Introduced: 28 Jul 2026
CVE-2026-66299 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:7.
NVD Description
Note: Versions mentioned in the description apply only to the upstream jws5-tomcat-jsvc package and not the jws5-tomcat-jsvc package as distributed by RHEL.
Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example.
This issue affects Apache Tomcat: from 11.0.0-M20 through 11.0.24, from 10.1.24 through 10.1.57, from 9.0.89 through 9.0.120. Users who have followed the security guidance to remove the examples web application are not affected by this issue.
Users are recommended to remove the examples web application or to upgrade to version 11.0.25, 10.1.58 or 9.0.121 (when released), which fix the issue.